ExpertMedium1 markMultiple Choice
CPA · Question 55 · Area II: Security
Which encryption type uses a public key to encrypt and a private key to decrypt?
Which encryption type uses a public key to encrypt and a private key to decrypt?
Answer options:
A.
Symmetric Encryption
B.
Asymmetric Encryption
C.
Hashing
D.
Obfuscation
How to approach this question
Two keys = Asymmetric.
Full Answer
B.Asymmetric Encryption✓ Correct
Asymmetric Encryption
Asymmetric cryptography (Public Key Infrastructure) uses a key pair. The public key encrypts, and only the private key can decrypt.
Common mistakes
Confusing Symmetric (one key) and Asymmetric (two keys).
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